ZEID, I. (1991). Cad/cam Theory And Practice Ibrahim Zeid. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)ZEID, Ibrahim. Cad/cam Theory And Practice Ibrahim Zeid. McGraw-Hill, 1991.
Lua MLA (8ú heag.)ZEID, Ibrahim. Cad/cam Theory And Practice Ibrahim Zeid. McGraw-Hill, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.